Dust-collector.



U. WEDGE.

DUST COLLECTOR.

APPLICATION FILED mus, 1910.

Patented Feb. 10, 1914.

4 SHEETS-SHEET 1.

U. WEDGE.

DUST COLLECTOR.

4 SHEETS-BHBBT 2.

Patented Feb. 10, 191i A 2 ///M/ M J. AL, k w v %I y m m r W fiW/W 1 1 m U. WEDGE.

DUST COLLECTOR.

APPLICATION FILED MAYQ, 1910,

1,086,961 Patented Feb. 10, 19M

4 SHEETS-SHEET 3.

U. WEDGE. DUST COLLECTOR.

APPLICATION FILED MAY 9 Patented Feb. 10, 1914.

4 SHEETS-8HEET 4 r the structural portion of a dust collector UNITED STATES PATENT OFFICE.

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I Specification of I etters Patent.

7 UTIQEY WEDGE, 0F ABDIOB-E, PENNSYLVANIA, ASSIQNOB Tq THE FURNACE PATENT COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYL- DUST-COLLEQTOB.

Patented Feb. 10, 1914.

Application filed Kay 9, Q10. Serial No. 560,820

To all whom it may concern:

. Bevit known that I, U'rnEY Wnoen, a citizen ofthe United States, residing in Ardmore, Pennsylvania, have invented certain Improvements in Dust-Collectors, of which the following is a specification.

invention consists of certain improve- 1 ments in the dust collector for furnaces for which I filed application for Letters Patent of the United States on the third day of January, 1910, Serial Number 535,995, the

objects of my present invention being to provide for the uniform distribution of the gas throughout the entire body of dust-collecting material; to provide effective means for removing the dustrcollecting material from the chamber through which the gas is caused to pass and its return to said cham- -.ber, and to provide for the ready with- .drawal of the removed dust. These objects I attain in the manner hereinafter setforth, reference bein had to the accompanying drawings, in w ich Figure 1 is a view, partly in elevation and partly in central longitudinal section, of

constructed in accordance with my present invention; Fig. 2 is a transverse section of the same on the line aa, Fig. 1 showing the structure charged with dust collecting material; Fig. 3 is a sectional plan view on the line b-b, Fig. 1; Fig. 4 is a transverse section on the line 0-0, Fig. 3; Fig. 5 is a transverse section on the line dd, Fig. 1; Figs. 6 and 7 are transverse sectional views of other forms of dust collector, embodying the main features of my invention. Fig. 8 1s a perspective view .of certain elements of the gas-distributing structure of the apparatus, and Fig. 9 is a longitudinal sectional view of part of the structure which supports the lower end of the grate bars on which rests the mass of dust collecting material.

The main structure 1 of the separator may be composed of concrete, brick work, or other material, and maybe of any desired cross sectional form and length. The structure shown in Fig. 1 is of rectangular section both longitudinally and transversely and is divided by a longitudinal partition wall 2 into a distributing chamber 3.and a separating chamber 4, the distributing chamber receiving the gas at one end. from a flue 5 communicating with the furnace, and

. the gas being delivered from the opposite end of the chamber 4 through a flue 6.

Extending transversely across the dust collecting chamber 4 are a series of short flues or ducts 7 of inverted U form, each of these short transverse ducts communicating at one end with the distributing chamber 3. Each of the transverse ducts 7 is also connected to the adjoinin duct by means of a series of short inverte troughs 9 at the bottom of the duct, as shown in Fig. 2.

In the lower portion of the chamber 4 are a series of grated hoppers 10, each having inclined sides and inclined bottom, each of these grated hoppers being composed of grate bars 11 hung at their rear or upper ends upon a straight notched bar 12 supported upon the partition wall 2, the front or lowerends of the grate bars being supported upon oppositely inclined bars 13 on the front wall of the main structure.

The dust-collecting material is composed of substantially spherical bodies which will flow freely, and the chamber 4 is partially filled with these dust-collectin units, as shown in Fig. 2, the transverse ucts'7 and cross troughs 9 being completely enveloped in said mass of dust-collecting units.

Gas entering the distributing chamber 3 is therefore caused to enter the cross ducts 7 and the connecting troughs 9 at the bottom of said ducts, consequently there is a free escape of gas around the lower edges of the ducts 7 and around the lower edges of the troughs 9, the result being a dissemination of the gas uniformly throughout the entire mass of dust-collecting material contained in the chamber 4. A free flow of the gas through the chamber 4 is permitted while at the same time the gas is brought into intimate contact with the dust-collecting units contained in said chamber and the course of the gas through the mass of dustcollecting material is so frequently interrupted and suffers such frequent change of direction that ample time is afforded for the deposit of dust upon the dust-collecting units of the mass.

The mass of dust-collecting units contained in the grated hoppers 10 is relatively free from the flow of gas and any dust which may be deposited upon the units contained in said hopper can find its way through the gratings and into the lower portion of the chamber 4, from which it can be removed at intervals through cleaning openings provided in the sides, ends and bottom of said chamber for this purpose,

similar openings being provided in the bottom of the distributing chamber 3 for the removal of any dust which may be collected in said chamber.

At the discharge end of each of the grated hoppers 10 is an outlet 15 provided with a movable cover, and from this outlet the dustcollecting units may be removed either continuously or at intervals so as to provide for the gradual descent of the mass of said units in the chamber 4, the units upon which dust has been deposited being dropped below that portion of the chamber through which the gas circulates, and, after dis-- charging their dust through the grated hoppers 10, being removed through the outlets 15.

The outlet of each of the grated hoppers 10 communicates through a short spout 16 (Fig. 2) with an inclined runway 17 which discharges into a hopper 19, the latter delivering the dust-collectin units into the boot of an elevator trun 20 which discharges said units at the top into inclined runways 21 which communicate with the interior of the chamber 4 through vertical spouts 22, as shown in Fig. 1, whereby the dust-collecting units are returned to said chamber. The position of the spouts 22 in respect to the casings 7 is shown by dotted lines in Fig. 3.

The flue 5 is divided into two parts by a central longitudinal wall 23 which aids in supporting the tiled top 24 of the flue, as shown in Fig. 4. When it is desired to conserve heat as in case the gas is directed to a Glover tower for the manufacture of sulfuric acid, the tiled top of the flue 5 may be overlaid with a mass 25 of asbestos or other material which is a poor conductor of heat, and the side walls of the flue may have air spaces 26 therein to prevent or restrict radiation of heat therefrom. The outlet flue 6 may be similarly constructed, as shown in Fig. 5.

In that form of my improved dust colector shown in Fig. 6, the casing 1 is in the form of a vertical cylinder having a central gas supplying flue 5 which communicates with the inner ends of a series of radiating.

flues or ducts 7 embedded in the mass of dust-collecting material and having their lower portions connected by annularly arranged inverted troughs 9, the gas escaping under the lower edges of the ducts 7 and troughs 9" rising through the mass of dust-collecting material and finally escaping through the discharge flue 6.

Below the ducts 7 is a grated hopper 10 of inverted conical form, communicating at its lower portion with a centrally disposed outlet pipe 15 for the discharge of the dustcollecting units, the casingl having an inverted conical bottom 30 for directing the dust which passes through the grated hopper 10 to an inclined discharge pipe 31.

That embodime t of my invention shown in Fig. 7 difi'ers f om the construction shown in Fig. 6, in ha ing the bars of the grated hopper reversel arranged so as to discharge into an nnular trough 32 on the exterior of the casing, the dust which passes through said grated hopper escaping through a central pipe 31 the casing.

at the bottom of The gas distributing ducts 7 may have s'o I rality of vertical casings extending transversely across the main chamber, each of said casings inclosing a chamber communicating at one end with the main gas passage and each of said chambers pendently of the others dust collecting units.

- 2. A dust collector provided with a main chamber containing a mass of dust collecting units, a main gas passage, and a plurality of vertical casings extending transdischarging indeinto the mass of versely across the main chamber, each of said casings inclosing a chamber communicating at one end with the main gas passage and each of said casings being open at the bottom, whereby the gas escapes from the bottom of each casing independently of the others into the mass of dust collecting units.

3. A dust collector provided with a chamber containing a mass of dust collecting units, a main gas passage, and a plurality of casings distributed throughout the area. of the main chamber, each of said casings containing a chamber communicating with the main gas passage, said casings being open at the bottom whereby the gas escapes from the bottom of each casing into the mass of dust collecting units, and the casings being connected by inverted troughs which also discharge at the bottom into the mass of dust collecting units.

4. A dust collector provided with a cham ber whose lower portion is bounded by a grated hopper, as discharging casings distributed throughout the area of the upper portion of said chamber, a continuous mass of dust collecting units contained in said chamber and filling the grated hopper thereof, and means for removing units from the bottom of the hopper whereby the dust will be separated from the dust collecting units during the passage of the same over the gratings.

5. A dust collector provided with a chamber containing a mass of dust collecting 5 units, means for distributing the gas throughout said mass, and a grated hopper in the lower portion of the chamber, said hopper consisting of independent bars engaging a straight bar at the back of the hopper and oppositely inclined bars at the 10 front of the hopper.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

UTLEY WEDGE.

Witnesses:

KATE A. Bmnm, HAMILTON D. TURNER. 

